Remove stale entities

Wl doesn't remove old entities from elmo cache, which are not
referenced by any live message any more. This silently eats
your disk space....

diff --git a/elmo/modb-standard.el b/elmo/modb-standard.el
index 1ecfcd6..f268c3a 100644 (file)
--- a/elmo/modb-standard.el
+++ b/elmo/modb-standard.el
@@ -247,6 +247,23 @@
                           entities))
       (ignore-errors (delete-file filename)))))
 
+(defun modb-standard-cleanup-stale-entities (modb path)
+  (message "Removing stale entities...")
+  (let* ((entity-regex
+         (concat "^" modb-standard-entity-filename "-\\([0-9]+\\)"))
+        (entities (elmo-uniq-list
+                   (mapcar
+                    #'(lambda (x) (/ x modb-standard-divide-number))
+                    (modb-standard-number-list-internal modb))))
+        (files (mapcar #'(lambda(x)
+                           (when (string-match entity-regex x)
+                             (string-to-int (match-string 1 x))))
+                       (directory-files path nil entity-regex))))
+    (dolist (entity (car (elmo-list-diff-nonsortable files entities)))
+      (ignore-errors (delete-file
+                     (expand-file-name
+                      (modb-standard-entity-filename entity) path))))))
+
 (defun modb-standard-save-entity (modb path)
   (let ((modified (modb-generic-message-modified-internal modb)))
     (cond ((listp modified)
@@ -259,7 +276,8 @@
             (dolist (section sections)
               (modb-standard-save-entity-1 modb path section))))
          (modified
-          (modb-standard-save-entity-1 modb path)))))
+          (modb-standard-save-entity-1 modb path))))
+  (modb-standard-cleanup-stale-entities modb path))
 
 ;;; Implement
 ;;